package javax.annotation;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import javax.annotation.meta.TypeQualifier;
import javax.annotation.meta.TypeQualifierValidator;
import javax.annotation.meta.When;

@Documented
@TypeQualifier
@Retention(RetentionPolicy.RUNTIME)
public @interface Nonnull {
  When when() default When.ALWAYS;

  static class Checker implements TypeQualifierValidator<Nonnull> {

    public When forConstantValue(Nonnull qualifierqualifierArgument, Object value) {
      if (value == null) return When.NEVER;
      return When.ALWAYS;
    }
  }
}
